Design Reference

Figure 56: Firewall load balancing configuration
Use this configuration to redirect incoming and outgoing traffic to a group of firewalls and to
automatically load balance across multiple firewalls. The benefits of such a configuration are
• increased firewall performance
• reduced response time
• redundant firewalls ensure Internet access
Virtual private networks (VPN) replace the physical connection between the remote client and
access server with an encrypted tunnel over a public network. VPN technology employs IP
security (IPsec) and Secure Sockets Layer (SSL) services.
Several Avaya products support IPSec and SSL, including Avaya VPN Gateway and Secure
Router.
Additional information
The following organizations provide the most up-to-date information about network security
attacks and recommendations about good practices:
• The Center of Internet Security Expertise (CERT)
• The Research and Education Organization for Network Administrators and Security
Professionals (SANS)
• The Computer Security Institute (CSI)
System and network stability and security
128 Network Design Reference for Avaya VSP 4000 February 2014
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